What airlines fly to Seattle?

British Airways, Delta and KLM are the top three most popular airlines that fly to Seattle from Barcelona according to our data. British Airways is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Barcelona to Seattle/Tacoma Intl Airport?

Prices for flights from Barcelona to Seattle/Tacoma Intl Airport were last updated today.

How many operators does momondo search for flights from Barcelona to Seattle/Tacoma Intl Airport?

As of October 2025, there are 4 operators available to choose from for flights from Barcelona to Seattle/Tacoma Intl Airport.

How old do you have to be to fly from Barcelona to Seattle/Tacoma Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Barcelona to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$329 Cheap Flights from Barcelona to Seattle in 2025/26

Q: What is the typical price of a round-trip flight between Barcelona and Seattle?

Prices are currently low for flights on this route. Typical prices usually range from $792 to $894. The lowest price recently found on this route was $641.

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Find the cheapest flights from Barcelona to Seattle

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11:30 am - 6:20 pmBCN-SEA

15h 50m1 stop

8:05 pm - 8:25 pmSEA-BCN

15h 20m1 stop

$641Aer Lingus

Find Deal

Mon, Nov 10 - Sun, Nov 23

11:30 am - 6:20 pmBCN-SEA

15h 50m1 stop

8:05 pm - 8:25 pmSEA-BCN

15h 20m1 stop

$646Aer Lingus

Find Deal

Mon, Nov 10 - Wed, Nov 26

5:45 am - 5:00 pmBCN-SEA

20h 15m2 stops

2:35 pm - 1:05 amSEA-BCN

25h 30m2 stops

$703Multiple Airlines

Find Deal

Sat, Nov 22 - Sat, Nov 29

10:20 am - 1:20 pmBCN-SEA

36h 00m2 stops

2:00 pm - 10:55 pmSEA-BCN

23h 55m2 stops

$709Multiple Airlines

Find Deal

Sat, Nov 22 - Sat, Nov 29

6:50 am - 12:10 pmBCN-SEA

14h 20m1 stop

7:00 am - 9:00 amSEA-BCN

17h 00m1 stop

$776United Airlines

Find Deal

Sat, Jan 31 - Tue, Feb 10

6:50 am - 12:10 pmBCN-SEA

14h 20m1 stop

11:45 pm - 9:35 amSEA-BCN

24h 50m2 stops

$779United Airlines

Find Deal

Sat, Jan 31 - Tue, Feb 10

12:30 pm - 10:07 pmBCN-SEA

18h 37m1 stop

2:09 pm - 5:20 pmSEA-BCN

18h 11m2 stops

$784British Airways

Find Deal

Sat, Jan 31 - Tue, Feb 10

5:50 am - 12:10 pmBCN-SEA

15h 20m1 stop

10:53 am - 1:10 pmSEA-BCN

17h 17m1 stop

$796Lufthansa

Find Deal

Sat, Nov 8 - Sat, Nov 15

5:50 am - 12:10 pmBCN-SEA

15h 20m1 stop

12:35 pm - 1:10 pmSEA-BCN

15h 35m1 stop

$799Lufthansa

Find Deal

Fri, Nov 7 - Fri, Nov 14

6:40 am - 4:55 pmBCN-SEA

19h 15m1 stop

5:24 am - 2:45 pmSEA-BCN

24h 21m2 stops

$827British Airways

Find Deal

Thu, Nov 13 - Thu, Nov 27

British Airways flights from Barcelona to Seattle

Our best British Airways deals on Barcelona to Seattle flight tickets

British Airways

Jan 31

BCN12:30 pmBarcelona-El Prat

18h 37m

1 stop

SEA10:07 pmSeattle/Tacoma Intl

Feb 10

SEA2:09 pmSeattle/Tacoma Intl

18h 11m

2 stops

BCN5:20 pmBarcelona-El Prat

$784

Find similar

British Airways

Nov 13

BCN6:40 amBarcelona-El Prat

19h 15m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

Nov 27

SEA5:24 amSeattle/Tacoma Intl

24h 21m

2 stops

BCN2:45 pmBarcelona-El Prat

$827

Find similar

United Airlines flights from Barcelona to Seattle

Our best United Airlines deals on Barcelona to Seattle flight tickets

United Airlines

Jan 31

BCN6:50 amBarcelona-El Prat

14h 20m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

Feb 10

SEA7:00 amSeattle/Tacoma Intl

17h 00m

1 stop

BCN9:00 amBarcelona-El Prat

$776

Find similar

United Airlines

Jan 31

BCN6:50 amBarcelona-El Prat

14h 20m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

Feb 10

SEA11:45 pmSeattle/Tacoma Intl

24h 50m

2 stops

BCN9:35 amBarcelona-El Prat

$779

Find similar

United Airlines

Nov 13

BCN6:50 amBarcelona-El Prat

14h 20m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

Nov 17

SEA7:00 amSeattle/Tacoma Intl

17h 00m

2 stops

BCN9:00 amBarcelona-El Prat

$816

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Mon 11/10

11:30 am-6:20 pm

1 stop15h 50m

Seattle/Tacoma Intl

Sun 11/23

8:05 pm-8:25 pm

1 stop15h 20m

$641

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Mon 11/10

11:30 am-6:20 pm

1 stop15h 50m

Seattle/Tacoma Intl

Wed 11/26

8:05 pm-8:25 pm

1 stop15h 20m

$646

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 11/22

5:45 am-5:00 pm

2 stops20h 15m

Seattle/Tacoma Intl

Sat 11/29

2:35 pm-1:05 am

2 stops25h 30m

$703

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 11/22

10:20 am-1:20 pm

2 stops36h 00m

Seattle/Tacoma Intl

Sat 11/29

2:00 pm-10:55 pm

2 stops23h 55m

$709

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 1/31

6:50 am-12:10 pm

1 stop14h 20m

Seattle/Tacoma Intl

Tue 2/10

7:00 am-9:00 am

1 stop17h 00m

$776

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 1/31

6:50 am-12:10 pm

1 stop14h 20m

Seattle/Tacoma Intl

Tue 2/10

11:45 pm-9:35 am

2 stops24h 50m

$779

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 1/31

12:30 pm-10:07 pm

1 stop18h 37m

Seattle/Tacoma Intl

Tue 2/10

2:09 pm-5:20 pm

2 stops18h 11m

$784

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Sat 11/8

5:50 am-12:10 pm

1 stop15h 20m

Seattle/Tacoma Intl

Sat 11/15

10:53 am-1:10 pm

1 stop17h 17m

$796

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Fri 11/7

5:50 am-12:10 pm

1 stop15h 20m

Seattle/Tacoma Intl

Fri 11/14

12:35 pm-1:10 pm

1 stop15h 35m

$799

BarcelonaSeattle

BCN - SEA

BCNSEA

Barcelona-El Prat

Thu 11/13

6:40 am-4:55 pm

1 stop19h 15m

Seattle/Tacoma Intl

Thu 11/27

5:24 am-2:45 pm

2 stops24h 21m

$827

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Barcelona to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between Barcelona and Seattle?

What is the cheapest month to fly to Seattle?

In general, March is the cheapest month to fly from Barcelona to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $698. If you don’t want to visit Seattle in March, then you should wait until May to fly from Barcelona, when ticket prices are also cheap, with an average price of $750.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Barcelona is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $784. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Barcelona because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,377.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Barcelona in the morning is the least expensive time of day to depart. momondo users have found prices as low as $877 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $1,226. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Barcelona to Seattle/Tacoma Intl flight route?

Fly from Barcelona-El Prat to Seattle/Tacoma Intl for the best Barcelona - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Barcelona when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $878 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Barcelona for as low as $820 on momondo.

What cabin class options are available on Barcelona to Seattle/Tacoma Intl flights?

There is only 1 cabin class available to choose from on Barcelona to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Barcelona to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Barcelona to Seattle

Direct flights	None

There are no direct flights from Barcelona to Seattle. There are no popular flight routes from Barcelona to Seattle.

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How far is Barcelona to Seattle/Tacoma Intl by plane?
The straight-line distance from Barcelona to Seattle/Tacoma Intl is 5410.7 mi. In terms of flight time, this usually takes a little over 14h 20m.
When did momondo last update prices for flights from Barcelona to Seattle/Tacoma Intl Airport?
Prices for flights from Barcelona to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from Barcelona to Seattle/Tacoma Intl Airport?
As of October 2025, there are 4 operators available to choose from for flights from Barcelona to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Barcelona to Seattle/Tacoma Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Barcelona to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Barcelona to Seattle

Compare and see reviews for airlines that fly from Barcelona to Seattle with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $677	Free Cancellation	Rating 7.7 1,399 reviews	Search KLM flights
Delta	PriceFrom $686	Free Cancellation	Rating 7.9 7,967 reviews	Search Delta flights
Lufthansa	PriceFrom $712	Free Cancellation	Rating 6.8 7,461 reviews	Search Lufthansa flights
British Airways	PriceFrom $768	Free Cancellation	Rating 6.7 7,446 reviews	Search British Airways flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Federal Way

Tukwila

Kirkland

Fife

Centralia

Lakewood

Shoreline

Cle Elum

Redmond

Westport

Why use momondo?

Why should I use momondo to find a flight deal from Barcelona to Seattle?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Barcelona to Seattle for you.

Can I find flights from Barcelona to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Barcelona with this policy.

How can momondo help me find flights from Barcelona to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Barcelona to Seattle.

I’m not ready to book a flight from Barcelona to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from Barcelona are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.